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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A333006 Number of rooted level-2 phylogenetic networks with n labeled leaves, when multiple (i.e., parallel) edges are not allowed.

Table of values

n a(n)
1 1
2 18
3 1143
4 120078
5 17643570
6 3332111850
7 769027554540
8 209740414484160
9 66001012966991340
10 23537700706536311400
11 9381525451337593738800
12 4132780832455382525556600
13 1993954501042287608709284400
14 1045675186072945581517653088800

List of values

[1, 18, 1143, 120078, 17643570, 3332111850, 769027554540, 209740414484160, 66001012966991340, 23537700706536311400, 9381525451337593738800, 4132780832455382525556600, 1993954501042287608709284400, 1045675186072945581517653088800]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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